Biotechnology Bulletin ›› 2026, Vol. 42 ›› Issue (7): 148-162.doi: 10.13560/j.cnki.biotech.bull.1985.2025-0877

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Whole-genome Identification of the Perilla frutescens ARF Transcription Factor Family and Functional Analysis of Its Role in Abiotic Stress Responses

HUANG Xu-sheng1, ZHOU Ya-li1, JIA Zheng-rong2, SHEN Shan3, CHEN Jin-chai1, ZHOU Guang-li1, LI Xin-xin1, WANG Ji-ping1, LI Run-zhi1, JIA Xiao-yun3()   

  1. 1.College of Agronomy, Shanxi Agricultural University, Shanxi Engineering Research Center for Genetics and Metabolism of Special Crops, Taigu 030801
    2.Sorghum Research Institute, Shanxi Agricultural University, Shanxi Provincial Key Laboratory of Sorghum Genetics and Germplasm Innovation, Yuci 030600
    3.College of Life Science, Shanxi Agricultural University, Shanxi Engineering Research Center for Genetics and Metabolism of Special Crops, Taigu 030801
  • Received:2025-08-12 Online:2026-07-26 Published:2026-07-20
  • Contact: JIA Xiao-yun E-mail:jiaxiaoyun@sxau.edu.cn

Abstract:

Objective Auxin response factor (ARF) plays a crucial regulatory role in plant hormone signal transduction and abiotic stress responses. The genome-wide identification of the Perilla frutescens PfARF transcription factor (TF) family and the analysis of the expression characteristics of related genes under abiotic stress provide a theoretical basis for elucidating the function of PfARF in the stress response of perilla. Method The PfARF members were identified from the genome of perilla, and their chromosomal location, phylogenetic evolution and conserved structures were analyzed using omic tools, such as TBtools, MEGA11, NCBI-CD Search, et al. The expressions of PfARF genes in the developing seeds of perilla and in the seedlings under abiotic stress was analyzed through RNA-seq and RT-qPCR. The PfARF22 gene was obtained using molecular cloning technology, and the subcellular localization of its encoded protein was detected by transient transformation in Nicotiana benthamiana leaves. A protein interaction network diagram of the PfARF22 TF was constructed, and its binding sites, binding energies, and other parameters were analyzed using molecular docking technology. Result A total of 29 PfARF family members were identified in perilla, which were classified into four subgroups. PfARF members in the same subgroup exhibited similarities in their conserved motifs and gene structures, and segment duplication was the main driving force for their evolution and expansion. PfARF genes showed differential expression in the developing seeds of perilla and in the abiotic stress conditions of the seedlings. The expression of PfARF22 gene significantly increased under low temperature and drought stress conditions. Subcellular localization analysis revealed that PfARF22 was located in nucleus. The molecular docking results indicated that PfARF22 and PfMADS1 cooperatively regulated biological processes such as the growth and development of perilla and responses to abiotic stress. Conclusion Perilla PfARF TF family consists of 29 members. PfARF22 has potential regulatory effects on the growth and development of perilla as well as responses to stress conditions such as low temperature and drought.

Key words: Perilla frutescens, auxin response factor, bioinformatics analysis, expression characteristic analysis, abiotic stress, groth and development